package io;

import java.io.*;

public class CopyDemo3 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("./Bfiles/abc.pptx");
        BufferedInputStream bis = new BufferedInputStream(fis);
        FileOutputStream fos = new FileOutputStream("./Bfiles/abc_cp.pptx");
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        int d ;
        long start  = System.currentTimeMillis();
        while ( (d = bis.read() ) != -1) {
            bos.write(d);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕!耗时"+(end-start)+"ms");
        bis.close();
        bos.close();

    }
}
